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Safety and Efficacy of Stent-Assisted Coiling of Unruptured Intracranial Aneurysms Using Low-Profile Stents in Small Parent Arteries

 J Kim  ;  H J Han  ;  W Lee  ;  S K Park  ;  J Chung  ;  Y B Kim  ;  K Y Park 
 AMERICAN JOURNAL OF NEURORADIOLOGY, Vol.42(9) : 1621-1626, 2021-09 
Journal Title
Issue Date
Arteries ; Cerebral Angiography ; Embolization, Therapeutic* / adverse effects ; Endovascular Procedures* ; Humans ; Intracranial Aneurysm* / diagnostic imaging ; Intracranial Aneurysm* / surgery ; Retrospective Studies ; Stents ; Treatment Outcome
Background and purpose: Stent-assisted coiling of intracranial aneurysms arising from small vessels (≤ 2.0 mm) is a common procedure. However, data regarding its treatment outcomes are scarce. This study evaluated the clinical and radiologic outcomes of stent-assisted coiling using low-profile stents for aneurysms of small parent arteries.

Materials and methods: From November 2015 to October 2020, sixty-four patients with 66 aneurysms arising from parent arteries of ≤2.0 mm were treated with stent-assisted coiling using a Low-Profile Visualized Intraluminal Support Junior (LVIS Jr) or the Neuroform Atlas stent in a single institution. The clinical and radiologic data were retrospectively reviewed, and the risk factors for procedure-related complications were evaluated.

Results: The LVIS Jr and Neuroform Atlas stents were used in 22 (33.3%) and 44 (66.7%) cases, respectively. Technical success was achieved in 66 cases (100%). Immediate postprocedural aneurysm occlusion grades assessed by the Raymond-Roy occlusion classification were I (57.6%), II (19.7%), and III (22.7%), respectively. Procedure-related complications occurred in 10 cases (15.2%), with 8 thromboembolic complications (12.1%) and 2 hemorrhagic complications (3.0%). Procedure-related morbidity was 4.5% without mortality. On multivariate analysis, current smoking (odds ratio = 7.1, P = .021) had a statistically significant effect on procedure-related complications.

Conclusions: Stent-assisted coiling of intracranial aneurysms with low-profile stents in small vessels (≤ 2.0 mm) had a 100% success rate and a 15.2% overall complication rate with 4.5% morbidity. Current smoking was a significant risk factor associated with procedure-related complications.
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1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Yong Bae(김용배) ORCID logo https://orcid.org/0000-0003-2262-7157
Kim, Junhyung(김준형) ORCID logo https://orcid.org/0000-0002-8908-978X
Park, Keun Young(박근영)
Park, Sang Kyu(박상규)
Lee, Woo Sung(이우성)
Chung, Joon Ho(정준호)
Han, Hyun Jin(한현진)
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